--- /dev/null
+/*! *****************************************************************************
+Copyright (c) Microsoft Corporation. All rights reserved.
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy of the
+License at http://www.apache.org/licenses/LICENSE-2.0
+
+THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
+WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
+MERCHANTABLITY OR NON-INFRINGEMENT.
+
+See the Apache Version 2.0 License for specific language governing permissions
+and limitations under the License.
+***************************************************************************** */
+
+
+
+/// <reference no-default-lib="true"/>\r
+
+
+declare namespace Intl {\r
+\r
+ /**\r
+ * [BCP 47 language tag](http://tools.ietf.org/html/rfc5646) definition.\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl#locales_argument).\r
+ *\r
+ * [Wikipedia](https://en.wikipedia.org/wiki/IETF_language_tag).\r
+ */\r
+ type BCP47LanguageTag = string;\r
+\r
+ /**\r
+ * Unit to use in the relative time internationalized message.\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/format#Parameters).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-singularrelativetimeunit).\r
+ */\r
+ type RelativeTimeFormatUnit =\r
+ | "year" | "years"\r
+ | "quarter" | "quarters"\r
+ | "month" | "months"\r
+ | "week" | "weeks"\r
+ | "day" | "days"\r
+ | "hour" | "hours"\r
+ | "minute" | "minutes"\r
+ | "second" | "seconds"\r
+ ;\r
+\r
+ /**\r
+ * The locale matching algorithm to use.\r
+ *\r
+ * [MDN](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl#Locale_negotiation).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-InitializeRelativeTimeFormat).\r
+ */\r
+ type RelativeTimeFormatLocaleMatcher = "lookup" | "best fit";\r
+\r
+ /**\r
+ * The format of output message.\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/RelativeTimeFormat#Parameters).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-InitializeRelativeTimeFormat).\r
+ */\r
+ type RelativeTimeFormatNumeric = "always" | "auto";\r
+\r
+ /**\r
+ * The length of the internationalized message.\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/RelativeTimeFormat#Parameters).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-InitializeRelativeTimeFormat).\r
+ */\r
+ type RelativeTimeFormatStyle = "long" | "short" | "narrow";\r
+\r
+ /**\r
+ * An object with some or all of properties of `options` parameter\r
+ * of `Intl.RelativeTimeFormat` constructor.\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/RelativeTimeFormat#Parameters).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-InitializeRelativeTimeFormat).\r
+ */\r
+ interface RelativeTimeFormatOptions {\r
+ localeMatcher?: RelativeTimeFormatLocaleMatcher;\r
+ numeric?: RelativeTimeFormatNumeric;\r
+ style?: RelativeTimeFormatStyle;\r
+ }\r
+\r
+ /**\r
+ * An object with properties reflecting the locale\r
+ * and formatting options computed during initialization\r
+ * of the `Intel.RelativeTimeFormat` object\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/resolvedOptions#Description).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#table-relativetimeformat-resolvedoptions-properties)\r
+ */\r
+ interface ResolvedRelativeTimeFormatOptions {\r
+ locale: BCP47LanguageTag;\r
+ style: RelativeTimeFormatStyle;\r
+ numeric: RelativeTimeFormatNumeric;\r
+ numberingSystem: string;\r
+ }\r
+\r
+ /**\r
+ * An object representing the relative time format in parts\r
+ * that can be used for custom locale-aware formatting.\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/formatToParts#Using_formatToParts).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-FormatRelativeTimeToParts).\r
+ */\r
+ interface RelativeTimeFormatPart {\r
+ type: string;\r
+ value: string;\r
+ unit?: RelativeTimeFormatUnit;\r
+ }\r
+\r
+ interface RelativeTimeFormat {\r
+ /**\r
+ * Formats a value and a unit according to the locale\r
+ * and formatting options of the given\r
+ * [`Intl.RelativeTimeFormat`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RelativeTimeFormat)\r
+ * object.\r
+ *\r
+ * While this method automatically provides the correct plural forms,\r
+ * the grammatical form is otherwise as neutral as possible.\r
+ * It is the caller's responsibility to handle cut-off logic\r
+ * such as deciding between displaying "in 7 days" or "in 1 week".\r
+ * This API does not support relative dates involving compound units.\r
+ * e.g "in 5 days and 4 hours".\r
+ *\r
+ * @param value - Numeric value to use in the internationalized relative time message\r
+ *\r
+ * @param unit - [Unit](https://tc39.es/ecma402/#sec-singularrelativetimeunit)\r
+ * to use in the relative time internationalized message.\r
+ * Possible values are: `"year"`, `"quarter"`, `"month"`, `"week"`,\r
+ * `"day"`, `"hour"`, `"minute"`, `"second"`.\r
+ * Plural forms are also permitted.\r
+ *\r
+ * @throws `RangeError` if `unit` was given something other than `unit` possible values\r
+ *\r
+ * @returns Internationalized relative time message as string\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/format).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-Intl.RelativeTimeFormat.prototype.format).\r
+ */\r
+ format(\r
+ value: number,\r
+ unit: RelativeTimeFormatUnit,\r
+ ): string;\r
+\r
+ /**\r
+ * A version of the format method which it returns an array of objects\r
+ * which represent "parts" of the object,\r
+ * separating the formatted number into its constituent parts\r
+ * and separating it from other surrounding text.\r
+ * These objects have two properties:\r
+ * `type` a NumberFormat formatToParts type, and `value`,\r
+ * which is the String which is the component of the output.\r
+ * If a "part" came from NumberFormat,\r
+ * it will have a unit property which indicates the `unit` being formatted;\r
+ * literals which are part of the larger frame will not have this property.\r
+ *\r
+ * @param value - Numeric value to use in the internationalized relative time message\r
+ *\r
+ * @param unit - [Unit](https://tc39.es/ecma402/#sec-singularrelativetimeunit)\r
+ * to use in the relative time internationalized message.\r
+ * Possible values are: `"year"`, `"quarter"`, `"month"`, `"week"`,\r
+ * `"day"`, `"hour"`, `"minute"`, `"second"`.\r
+ * Plural forms are also permitted.\r
+ *\r
+ * @throws `RangeError` if `unit` was given something other than `unit` possible values\r
+ *\r
+ * @returns Array of [FormatRelativeTimeToParts](https://tc39.es/ecma402/#sec-FormatRelativeTimeToParts)\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/formatToParts).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-Intl.RelativeTimeFormat.prototype.formatToParts).\r
+ */\r
+ formatToParts(\r
+ value: number,\r
+ unit: RelativeTimeFormatUnit,\r
+ ): RelativeTimeFormatPart[];\r
+\r
+ /**\r
+ * Provides access to the locale and options computed during initialization of this `Intl.RelativeTimeFormat` object.\r
+ *\r
+ * @returns A new object with properties reflecting the locale\r
+ * and formatting options computed during initialization\r
+ * of the `Intel.RelativeTimeFormat` object.\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/resolvedOptions).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-intl.relativetimeformat.prototype.resolvedoptions)\r
+ */\r
+ resolvedOptions(): ResolvedRelativeTimeFormatOptions;\r
+ }\r
+\r
+ /**\r
+ * The [`Intl.RelativeTimeFormat`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/RelativeTimeFormat)\r
+ * object is a constructor for objects that enable language-sensitive relative time formatting.\r
+ *\r
+ * Part of [Intl object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl)\r
+ * namespace and the [ECMAScript Internationalization API](https://www.ecma-international.org/publications/standards/Ecma-402.htm).\r
+ *\r
+ * [Compatibility](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat#Browser_compatibility).\r
+ *\r
+ * [Polyfills](https://github.com/tc39/proposal-intl-relative-time#polyfills).\r
+ */\r
+ const RelativeTimeFormat: {\r
+ /**\r
+ * Constructor creates [Intl.RelativeTimeFormat](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RelativeTimeFormat)\r
+ * objects\r
+ *\r
+ * @param locales - A string with a [BCP 47 language tag](http://tools.ietf.org/html/rfc5646), or an array of such strings.\r
+ * For the general form and interpretation of the locales argument,\r
+ * see the [`Intl` page](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl#Locale_identification_and_negotiation).\r
+ *\r
+ * @param options - An [object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/RelativeTimeFormat#Parameters)\r
+ * with some or all of options of the formatting.\r
+ * An object with some or all of the following properties:\r
+ * - `localeMatcher` - The locale matching algorithm to use.\r
+ * Possible values are `"lookup"` and `"best fit"`; the default is `"best fit"`.\r
+ * For information about this option, see [Intl page](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl#Locale_negotiation).\r
+ * - `numeric` - The format of output message.\r
+ * Possible values are: `"always"` (default, e.g., `1 day ago`) or `"auto"` (e.g., `yesterday`).\r
+ * The `"auto"` value allows to not always have to use numeric values in the output.\r
+ * - `style` - The length of the internationalized message. Possible values are:\r
+ * `"long"` (default, e.g., in 1 month),\r
+ * `"short"` (e.g., in 1 mo.)\r
+ * or `"narrow"` (e.g., in 1 mo.). The narrow style could be similar to the short style for some locales.\r
+ *\r
+ * @returns [Intl.RelativeTimeFormat](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RelativeTimeFormat) object.\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/RelativeTimeFormat).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-intl-relativetimeformat-constructor).\r
+ */\r
+ new(\r
+ locales?: BCP47LanguageTag | BCP47LanguageTag[],\r
+ options?: RelativeTimeFormatOptions,\r
+ ): RelativeTimeFormat;\r
+\r
+ /**\r
+ * Returns an array containing those of the provided locales\r
+ * that are supported in date and time formatting\r
+ * without having to fall back to the runtime's default locale.\r
+ *\r
+ * @param locales - A string with a [BCP 47 language tag](http://tools.ietf.org/html/rfc5646), or an array of such strings.\r
+ * For the general form and interpretation of the locales argument,\r
+ * see the [`Intl` page](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl#Locale_identification_and_negotiation).\r
+ *\r
+ * @param options - An [object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/RelativeTimeFormat#Parameters)\r
+ * with some or all of options of the formatting.\r
+ * An object with some or all of the following properties:\r
+ * - `localeMatcher` - The locale matching algorithm to use.\r
+ * Possible values are `"lookup"` and `"best fit"`; the default is `"best fit"`.\r
+ * For information about this option, see [Intl page](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl#Locale_negotiation).\r
+ * - `numeric` - The format of output message.\r
+ * Possible values are: `"always"` (default, e.g., `1 day ago`) or `"auto"` (e.g., `yesterday`).\r
+ * The `"auto"` value allows to not always have to use numeric values in the output.\r
+ * - `style` - The length of the internationalized message. Possible values are:\r
+ * `"long"` (default, e.g., in 1 month),\r
+ * `"short"` (e.g., in 1 mo.)\r
+ * or `"narrow"` (e.g., in 1 mo.). The narrow style could be similar to the short style for some locales.\r
+ *\r
+ * @returns An array containing those of the provided locales\r
+ * that are supported in date and time formatting\r
+ * without having to fall back to the runtime's default locale.\r
+ *\r
+ * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat/supportedLocalesOf).\r
+ *\r
+ * [Specification](https://tc39.es/ecma402/#sec-Intl.RelativeTimeFormat.supportedLocalesOf).\r
+ */\r
+ supportedLocalesOf(\r
+ locales: BCP47LanguageTag | BCP47LanguageTag[],\r
+ options?: RelativeTimeFormatOptions,\r
+ ): BCP47LanguageTag[];\r
+ };\r
+\r
+ interface NumberFormatOptions {\r
+ compactDisplay?: string;\r
+ notation?: string;\r
+ signDisplay?: string;\r
+ unit?: string;\r
+ unitDisplay?: string;\r
+ }\r
+\r
+ interface ResolvedNumberFormatOptions {\r
+ compactDisplay?: string;\r
+ notation?: string;\r
+ signDisplay?: string;\r
+ unit?: string;\r
+ unitDisplay?: string;\r
+ }\r
+}\r
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